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Updated on : 2022-09-05

Solution

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Correct option is B)

Length of the train $=150m=1000150 =203 km$

and time taken to cross the man = $10$ seconds = $60×6010 $

Relative speed = $(x−2)kmph$

(Both are moving in same direction)

We know that,

$Relative speedLength of the train =$ Time taken to cross the man

Relative speed = $20×13×360 $

$x−2=20×13×360 $

$x=54+2=56kmph$

Hence, speed of train is $56kmph$.

and time taken to cross the man = $10$ seconds = $60×6010 $

Relative speed = $(x−2)kmph$

(Both are moving in same direction)

We know that,

$Relative speedLength of the train =$ Time taken to cross the man

Relative speed = $20×13×360 $

$x−2=20×13×360 $

$x=54+2=56kmph$

Hence, speed of train is $56kmph$.

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